某插电式混合动力汽车高原实际行驶排放试验研究

刘文彬

安徽江淮汽车集团股份有限公司技术中心，安徽 合肥  230601

摘要：为降低高原低温边界环境下插电式混合动力汽车（plug-in hybrid electric vehicle，PHEV）实际行驶污染物排放（real driving emissions，RDE），采用车载便携式排放测试设备对某PHEV车型开展RDE测试，基于排放测试结果，优化发动机控制单元、整车控制单元控制策略降低冷起动、过渡工况的排放，并对优化后的PHEV进行RDE测试验证。结果表明:优化后,RDE测试总行程的NO_x、PN排放较优化前分别下降52.5%、75.2%，市区行程的NO_x、PN排放分别下降70.3%、51.6%，且NO_x、PN的符合性因子均小于2.1，满足国六b要求。PHEV实际道路排放与传统车型存在较多不同，需要从多工况、多控制器角度出发优化排放，满足环保标准要求。

关键词：高原；PHEV；RDE；NO_x排放；PN

Experimental study on high altitude real driving emissions ofa plug-in hybrid electric vehicle

LIU Wenbin

Technical Center of JAC，Hefei 230601, China

Abstract：In order to reduce the real driving emissions (RDE) of plug-in hybrid electric vehicle(PHEV) in high-altitude low-temperature boundary environments, a portable emission testing device is used to conduct RDE emission test on a certain PHEV model. Based on the emission test results, the engine control unit and vehicle control unit control strategies are optimized to reduce emissions during cold start and transition conditions, and conduct RDE testing to verify the optimized PHEV. The results show that after optimization, the NO_x and PN emissions of the total RDE test decreases by 52.5% and 75.2%, respectively. The NO_x and PN emissions of the urban phase decreases by 70.3% and 51.6%, respectively, and the conformity factor of NO_x and PN are both lower than 2.1, which meets the requirements of CHINA 6 b. The actual road emissions of PHEV differ significantly from traditional vehicle models, requiring optimization of emissions from multiple operating conditions and controllers to meet environmental standards.

Keywords:high altitude; PHEV; real driving emission; NO_x emission; PN